Combined type-writing and adding machine.



A. H. ELLIS; COMBINED TYPE WRITING AND ADDING-MACHINE.

APPLICATION FILED AUG. 8, 1905. 1,09 1,820. Patented Mar. 31, 1914.

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COMBINED TYPE WRITING AND ADDING MACHINE.

APPLICATION III-ED AUG. 8, 1905.

1,09 1,820. Patented Mar. 31, 19m

7 SHEETS-SHEET 2.

A/ITNEEEEg: V INVENTgTI 1415 AT T UH'NE Y A. H. ELLIS.

COMBINED TYPE WRITING AND ADDING mcamn.

APPLICATION FILED AUG. 8. 1905.

Patented Mar. 31, 1914.

'! SHEETS-SHEET 3.

M INVENTUR MMALv -""IE TTDRNEY A. H. ELLIS.

COMBINED TYPE WRITING AND ADDING MACHINE.

I VAPPLIOAITIOH FILED AUG. 8, 1906. 1,091,320, Patented Mar. 31, 1914,

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DOIBIHED TYPE WRITING AND ADDING MACHINE.

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1,091,820. Patented Mar. 31, 1914.

7 SHEETS-BEBE! 6.

INVENTDR= WITNESSES 1 mpg a: Q 4" I 1-115 TTEIRNEY A. H. ELLIS.

COMBINED TYPE WRITING AND ADDING MACHINE.

APILIOATION FILED AUG. 8, 1905. 1,09 1,820. Patented Mar. 31, 1911 I27 SHEETS-SHEET B.

Hall

\A/ITNE5E1E5= INVENTCIR a 76 WW. W 1-115 ATTDRNEY A. H. ELLIS.

COMBINED TYPE WRITING AND ADDING MACHINE.

APPLICATION FILED AUG. 8, 1905.

WITNESSES:

Patented Mar. 31, 191 1 7 SHEETS-SHEET I.

67 W HIE ATTDRNEY INVENTEIRQ ing machines.

My invention relates also to comb ned UNITED STATES PATENT OFFICE.

ALBERT BL ELLIS, OF KINGSTON, NEW YORK, ASSIGNOR, BY MIQSNE ASSIGNMENT, E0 REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

COMBINED TYlE-WRITING AND ADDING 'MACHINE.

Specification 0! Letters Patent.

Patented Mar. 31, 1914.

7 Application filed AngnstB, 1905. Serial No. 273,297.

To all whom it may concern:

Be it known that I, ALBERT H. ELLIS, citizen of the United States, and resident of Kingston, in the county of Ulster and State of New York, have invented certain new and useful Improvements in- Combined Type- VVriting and Adding Machines, of which thefollowing is a specification. 1

My invention relates principally to addtypewriting and adding machines. N The present invention is in the nature of an improvement on, or modification of, theinvention set forth in my prior application Serial No. 175,457, filed October 2nd, 1903, patented A ril 30, 1907, No. 852,016. x, One of t e objects of the present invention is to so arrange the adding machine described in my said patent that the register wheels are not turned until after a number has been set up.

Another object is t-o'give the operator an opportunity to inspect each number after it is written and before it is added, to see whether the written number is correct.

Another object isto provide means whereby in case the operator has struck a wrong numeral key and thus written the wrong number on the typewriting machine and set up the wrong number on the adding machine, said erroneous number may be erased from the typewriting and also from the addin certain features of construction and com binati'ons and arrangements of parts which will be fully set forth herein and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of one end of the adding mechanism looking from the back of the machine. Fig. 2 is a rear elevation of part of the mechanism shown in Fig. 1. Fig. 3 is an elevation of the right-hand end.of the adding mechanism with the right-hand end frame plate removed. Fig. 4 is a view similar to Fig. 3, but with the first two frame plates at the right-hand end of the machine removed and some of the parts shown in -Fig. 3 omitted. Fig. 5 is a partial front elevation of the adding mechanism. Fig. 6 is a detail view in horizontal section showing a detent device. Fig. 7 is a perspective view of a typewriting machine and adding machine connected together by an electric cable. Fig. 8 is a plan view of parts of 'the typewriter, some electrical connections being shown diagrammatically. Fig. 9 is an isometric view of a restoring bar. Fig. 10 IS a front view of a contact block. Fig. 11 is a rear view of the contact shoe. Fig. 12 is a top lan view showing a part of the keyboard 0 the typewriting machine andshowing the key-controlled electrical connections, certain parts being omitted or broken away and parts shown in section. Fig. 13 is an end elevation of the rear part of the typewriting machine showing the electrical connections, parts being broken away or shown in section or omitted as has been found con venient. Fig. 14 is a bottom view of an electrical plug. Fig. 15 is a rear view of the sal ne. Fig. 16 is a diagram of the electrical connections between the typewriter and the denomination selecting and digit selecting magnets.

In most of the figures of the drawings, parts have been shown in section or broken away and parts have been omitted as has been found convenient.

Most of the mechanism used in the present instance is identical with that shown and described in my said patent to which reference is made for a more complete showing and descriptiomthereof. In the present instance I have shown only so much of said mechanism as is'necessary to an understanding of the present modifications thereof.

he adding machine 1 (Fig. 7) is controlled by the keys and carriage of a typewriting machine 2 by certain electrical devices, through a series of wires joining the two machines and inclosed within a cable 3. The main frame of the adding machine comprises a horizontal plate 4 which divides 5 saidmachine into an upper and a lower secclosed in the upper section and in the lower section are mounted an electric, motor and a number of electrical connections which will be more particularly referred to hereafter.

Rising from the horizontal plate 4 are a I the adding machine, said shaft being 'journaled in a bearing piecelt) (Fig.- 1) secured,

to said frame plate 7. As shown in F ig. 5,

each of the register,wheels;8 formed on each of itssides withhnfannular flange 11 projecting from the Iweb'iof .tli'e wheel and 7 within saidannular: flanges'fl'there faretfric tion disks mounted on the shaft' QJinIsuch manner that said disks are-constrained to turn with said shaft.-" Saidfriction disks are pressed against the webs of the-wheels 8 byi-compression springs 12 so-that each of the register wheels 'isfconnected with the shaft 9 by frictional contact. Preferably a friction pad is interposed between-the web of whl 8 and the-friction disks as shown in my patent referred to above. When said shaft is turned each of the wheels 8 tends 'to turn with it and does turn with it unless held against rotation. :';Each of the wheels 8 has on its periphery'gtwo series 'of digits from O to 9" inclusive, and said digits are read through sight'iopenings 13 (Fig. 7) in the casing of the-L adding machine. The motion of the wheels 8 under the impulse of the driving shaft ,9 is controlled by a series of settable stopsior digit determining means 14. Said stop's, as here'shown, are in the form of-pins which extend through the wheels parallel to the shaft 9, said pins normally projecting ashort distance from the left-hand faces of the register wheels, but adapted to be pushed toward the right so as to project a short distance from the righthand faces of the wheels.

In Fig. 1 it will be': seen that all of the pins 14 except one, normally project toward the left, the exception being that pin in each wheel which; as-seen in the plan view, is nearest the back of the machine. When any pin is caused to'project from the righthand face of'the register wheel it is in its operative position, that is to say it is in position to engage a stop 15 (Fig; 1) which arrests the wheel and prevents it from turning. farther with the shaft/9. The pins 14 are set to operative position by a series of setting levers 16, nine such levers being provided for each register wheel. The setv spondin ting levers 16 are pivoted on shouldered and 'each digit. The shaft 9 turns toward the front of the machine and to add one on a register wheel, thatpin 14 which is in engagement with the stop 15 is;pushed to inoperative 'position and the first .pin below it is pushed to operative position. The register wheel will then turn with the shaft 9 through one-twentieth of a complete rotation, thus bringing the next digit. on the wheel'before the sight opening 13. -If two is to be added the second pin below the stop 15 will be pushed to operative position and the wheel will turn through two spaces and h II one of the setting levers-16 has its upper end opposite each one of the ninepins preceding theone that -isinengagement with the stop 15 That "setting lever 16 which is nearest the back of the machine therefore corresponds to the digit 1 the ne-Xtone to the digit 2 and so on, that lever which is nearest the front of the machine corresponding to the digit The reciprocatorybars 18 lie beneath the entire series of register wheels and there is one such bar for each digit. All of the setting levers 16 corresponding to the digit 1 are mounted on that bar- 18 which lies nearest to the back ofthe machine; all, of .the setting levers 16 -correto the digit 2 are mounted on the second of said bars, and so on. Each of the setting levers 16 is extended below its bar 18 and is forked at its lower end to embrace a yoke bar 19. Said yoke bars extend in a front and back direction, there being one such bar for each register wheel and all of the setting levers 16 that cooperate with one of the register wheels are in engagement with the yoke bar 19 corresponding to that register wheel. Each of said yoke bars is mounted at its-forward end on an arm 20 and at its rear end on an arm 21, both of said arms depending from a rock shaft 22 which is journaled at its forward end in a longitudinal frame bar 23 that is supported at its ends by the frame plates 6 and 7. In order to reciprocate the bars 18 each of said bars has a pin 24 projecting therefrom into a slot in the upper end of an arm 25 which is rigidly mounted on a rock-shaft 26. Said rock shafts 26 are journaled in lugs or ears 27 rising from the bars. The arms 25 are restored to normal position by springs 29 (Fig. 5) coiled about the hubs of said-arms and at one end pressing against said arms and at the other end pressing against the frame plate 4. The construction is such that if one of the bars 18 be moved toward the right until it is arrested by its stop screw 28 all of the setting levers 16 mounted on said bar will have their upper ends moved toward the right, but not through a distance sufficient to engage .one of the pins 14. Furthermore, if one.of the shafts 22 be rocked, the yoke bar 19, connected'with said rock shaft, will 'move toward the left, thus moving the lower ,right, and thatone of said setting levers 16 "that is mountedon the operated barv 18 and that is also connected with the operated yoke bar 19, will be moved a double distance, thus pressinggjts; pin 14 tooperative position. It will thus be seen that when the bag; 18, corresponding to a particular digit, and theQyoke barns, correspondingto a particular denomination, are operated at the same time, thestop pin 14 corresponding to that digit and that denomination will be set'to operative position. In order to add thedigit thus set up in one of the wheels, it is necessary that the stop pin 14 that is in engagement with the stop 15 be reset to inoperative position. To this end a series of levers 30 (Fig. 4), one for each register wheel, are pivoted on shouldered and headed screws 31 that are threaded into a frame bar 32 that is mounted at its ends in the frame plates 6 and 7. The upper end of each of the levers 3O stands on the righthand side of the corresponding register wheel and is bent off, as shown at 33, to. form a tappet that stands opposite the end of the pin 14 that is in engagement with the stop 15. The lower endof the lever 30 is forked and embraces a pin 34 projecting from an arm 35 projecting upward from the rock shaft 22. As shown in the present instance the arm 35 is in the natureof an upper prolongation of the arm 21 above described. The construction is such that when any rock shaft 22 is operated, the arm is moved toward the right, thus swinging the lower end of the lever 30 toward the right and the upper end of said lever toward the left and pressing the pin 14 to inoperative position.

The denomination selecting rock shafts 22 are operated by a series of electromagnets 36 (Fig. 1), the electric circuits of whi h include a series of wires 37 (Fig. 7) which are selected by a contact shoe 38 mounted on the carriage of the typewriting machine. Said electric circuits will be more fully described hereinafter. The electromagnets 36 are secured by means of screws 39 to a frame bar 40 that is mounted at its ends in the frame plates 6 and 7. Each of the rock shafts 22 is journaled at its rear end in an car 41 (Fig. 1) rising from a frame bar 42 that is mounted at its ends in the frame plates 6 and 7 and each of said rock shafts has mounted on its rear end an armature 43 that lies beneath one of the electromagnets 36. Each of said armatures is provided with a returning spring 44. The digit selecting rock shafts 26 having mounted on their rear ends armatures 45 (Fig. 1 lying below the lower ends of a series of digit selecting electromagnets 46 which are secured by screws 47 to a frame bar 48 which is mounted at its ends ,in the frame plates 6 and 7. The electric circuits of the digit selecting magnets 46 include a series of.

wires 49 (Fig. 7) that enter the cable 3 from a box or case 50 mounted on the back shelf of the typewriting machine. \Vit-hin this case 50 are mounted a series of contacts controlled by the numeral keys of the typewriting machine. such that when the carriage stands in the position correspondin to a particular denomination in the ad ing column, if a numeral key be depressed an electric circuit will be-completed through that magnet 46 corresponding to said numeral key, and through that magnet 36 corresponding to that denomination, with the result that the rock shafts 26 and 22 appropriate to said digit and denomination, will be simultaneously operated, thus returning to inoperative position that pin 14 in the wheel of "corresponding denomination that was in en gagement with the stop 15 and setting to operative position that pin 14 in said wheel which corresponds to the digit written on the typewriter.

In order to provide for carrying from one denomination to another, the sto 15 is made movable into and out of the pat of the pin 14. To this end each of said stops consists of an ear bent off from a transfer arm or lever 51 (Fig. 4), the hub 52 of which is journaled on a rod 53 which is mounted on a frame bar 54 which is supported at its ends by the frame plates 6 and 7. Said transfer lever is capable of*a slight swinging motion which is adjustably limited in both directions by adjusting screws 55 threaded through the frame bar 54 and The construction is adapted to enga e arms of said lever 51. Said lever is yieldingly held in any position to which it may be set by a friction spring 56 that'presses against the frame bar 54 and the hub 52 of said lever. Each of said transfer levers extends between two of the registerwheels 8, the stop 15 being bent off toward the left from said lever to engage the pins 14 of the wheel of higher denomination. Each of said levers has bent off toward the right therefrom a cam PJItlOIl 57 which lies in the path of two transfer pins 58 that project from the left-hand side of thewheel of lower denomination. said" wheel of lower denomination passes from its 9 to its zero position, one of the pins 58 passes the cam 57, pressing the transfer lever toward the back of the machine, thus removin the stop 15 from the path of the pin 14. lhen said pin escapes from the 59 projecting from its left-hand face into the path of the pin14 which has just escaped fro-mthe stop 15 and said pin, engaging said cam, restores the transfer lever'to normal position. In order to set thelnext succeeding pin 14 to operative position in time to have said .pin arrested by the-stop 15, a lever 60-is pivoted at its upper end at 61 to the transfer lever 51 and said lever 60 has a cam edge 62 lying in the path of the pin 11. When said pin escapes from the stop 15 it engages the cam 62, and presses the lever 60 toward the rear of the. machine. The lower ends of said levers 60 play in vertical slots in the front face of the frame bar and in a horizontal slot in said frame bai: lie a series of bell crank levers 63 which are pivoted on screws 64. The levers 60 engage transversely extending arms 65 of said bell crank levers 63 (Fig. 1) and press said arms toward the rear of the machine. Said arms 65 are also engaged by returning springs 66 seatedin holes in the frame bar 32. Each of the bell crank levers 63 has a forwardly projecting arm of T-shap'e and the upper end of the cross of said T-shaped arm normally lies to the left of that pin '14 that is in engagement with the stop 15. \Vhen said pin'escapes from said stop the lever 60 presses the arm 65 toward the rear of'the machine, thus moving the T-shaped arm' 67 toward the right, thus pressing the next succeedin pin 14 to operative position. Immediately tiereafter the first pin 14 engaging the cam 59 moves the stop 15 into the path of the newly set pin 14. It will be perceived that in this operation one of said pins 14 escapes past the stop 15 without being reset to inoperative position. In order to resetany such pins before they come within the part of the wheel covered by the setting levers 16, there is provided a seriesof wipers or cams 68 consisting of blocks mounted on a frame bar 69 which is secured at its ends to the frame plates- When 6 and 7. The wipers 68 cam to inoperative position the pins 14 that pass them without having been first reset.

In order to reset the register wheels to zero at the end of a registering operation, I provide a zero key 70 and means controlled by said key for setting to inoperative position all those pins 14 that are in engagement -with the stops 15 and automatically setting to operative position a pin 14 in each wheel that-is adapted to arrest that wheel in its zero position. The first of these operations is performed by actuating all of the lovers 30 that reset the pins to inoperative position. To this end asliding bar 71 lies just back of the lower ends of all of said levers 30 and said bar'has a series of pins 72 projecting therefrom in such position that if the bar be moved toward the right, one of said pins will engage each of the levers 30 and move its lower end toward the right, thus moving its upper end toward the left and resetting the pin 14 of the corresponding wheel. The bar 71 has sliding bearings in the frame plates 6 and 7, through the latter of which saidbar projects intothe right hand compartment of the machine. A new pin 14 is set by means controlled by a second sliding bar 7 3'mounted above the register wheel and having a sliding bearing in the frame plate 6. At its right-hand end the bar 73 is provided with a pin 74 that projects into the frame plate 5 and forms a sliding bearing for that end of said bar. The two bars 71 and 73 are connected to- 100 gether at their right-hand ends by a cross bar 75 secured thereto byscrews or rivets 76. The key 70 has a stem 77 slidably mounted in a bracket 78 projecting from the frame plate 7 and the inner end of said key 1 5 stem engages an ear. bent off from a bell crank lever .79 which is pivoted at 80 to .a bracket 81 that is secured by a screw 82 to the inner face of the frame plate 5. The bell crank lever 79 has an arm 83 that en- 10 gages the cross bar 75 in such manner-that when the key 70 is depressed said cross bar is moved to the right, carrying with it slid ing bars 71 and 73. The latter of said bars is provided with a returning spring 84 se- 1 5 cured at oneend to said bar and at the other end to the frame plate 7. It will be perceived that when the key 70 is depressed'all of the pins 14 that are in engagement with the stops 1-5 will be reset to inoperative position.

The'bar 73 controls devices for setting pins adapted to cause the register wheels to be arrested in zero position, said devices being shown in Figs. 4 and 5. At points 85, a little to the left of the several register wheels, a series of levers 86 are pivoted to the bar 73 and said levers extend into the spaces between the register wheels. Each of said levers is drawn toward the right by a spring 87 which is connected at one end to the lever and at the other end to a pin 88 projecting from the bar 73. Said spring normally holds the lever in engagenmnt with a stop pin 89 projecting from said bar. The levers 86 may conveniently be constructed of sheet metal and each of them has bent 01f therefrom a flat portion 90 that lies parallel with the web of the register wheel; Each of said levers also has bent off from its free end toward the right an ear or lug 91. Each of the register wheels has' on its righthand face an annular flange 92 that extends inward from the fiat peripheral face of the wheel, and it is in this flange that one end of each of the pins 14 is mounted, the other ends of said pins being mounted in the web of the wheel. The flange 92 is formed with two notches 93 situated diametrically opposite to each other." Thepar ts are so constructed that when upon the depression of the zero key 70 the bar 73'is inov'edtoward the right,the lug 91 engagesand'is arrested by the flange 92 and the stop pin '89 moves away from the lever 86, stretching the spring 87. At the same time'the operative. pins 14 have been reset. If now the shaft 9 e turned, each of the register wheels will 'turn with it until one of the notches .93

reaches the lug91, when the lever 86 will be drawn to the right by its spring 87, the lug 91 entering the notch 93,and arresting the wheel The notches 93 are so positioned that when the lug-91 enters one of said notches, the flat portion 90 of the lever 86 presses one of the pins 14 to operative position. In order for theparts to operate as has been described it is necessary that the bar .73 be held in its right hand position until all of the register wheels have been arrested by the lugs 91. In'. order to insure that this operation shall take place it is neeessary that said bar be held in its right-hand osition for at least one-half a rotation of the shaft 9. If then the bar73 be permitted to return to its normal position-under the impulse of the returning spring 84 the pins 89 will cause all of the levers 86 to move with. said. bar and .withdraw the lugs 91 from the notches 93, thus releasing the register wheels and permitting them to turn with the shaft Each of said register wheels will then have one of its pins 14 set to operative position and as the shaft continues to turn, these pins .will be brought around to the transfer levers 51. .By this time each of the register wheelswill have made more than half of a rotation and one of the transfer pins 58 will, therefore,'ha\'e passed the cam 57 and have camnied the transfer lever to its transfer position with the stop 15 out of the path of the pin 14. It is necessary therefore that the notch 93 be in such posi-' tion; that thepin 14 set by the lever 86 is not the pin corresponding'to the zero posi- 'at the other end to said frame plate.

tion of the wheel, but that pin correspondingto the 9 position of the wheel. Said pin is not arrested by the stop 15, out it op crates the cams -62 and 59, thus setting' to operative position the next succeeding pin 14 and restoring the stop 15 to; operative position. 7

In order to automatically retain the bar 73 in its right-hand position through at least half a rotation of the shaft 9, the means shown in Fig. 2 are provided. The lever 79 has ivoted thereto an arm 94, the free end of w ich lies in a slot formed in the outer end of a bracket 95 projecting from the frame plate 7. Said arm is drawn toward .said frame plate 7 by a spring 96 which is connected at one end to the arm aitild T e free end of the arm 94 is formed into'a hook or notch, so that when the lever 7 9 is operated by the key 70,.said hook engagesthe bracket 95 and retains said lever in its operated position. The arm 94'has an arm- 9 projecting therefrom and forminganotch between the arm 94 and the free end of'the opposite sides of the lever 98 and secured in position on said rod by set screws. The

faces of the collars 100 next to the lever are so formed as to permit said lever to swing in any direction about the rod as a-pivot but so as to prevent the lever from rotation about its own length as an axis. The lever 98 is drawn toward the bottom of the notch and toward the arm 94 by an obliquely disposed spring 101-connected at one end to the ever and at the other end to the frame plate 7. a The free end of the lever 98 stands near a worm 102 mounted on the shaft 9, but said lever is normall' held out of-engagement with said worm y the arm 94. When said arm is moved longitudinally by the depression of the lever 79, however, the free end of the lever98 is permitted to fall under the impulse of its spring 101 on to the worm 102, which as the shaft 9 is rotated moves the free end of said lever toward the right. As the shaft 9 rotates, the worm 102 moves the lever 98 toward the right until said le-' ver engages the arm 97 and withdraws the hook end ,of the arm 94 away from the bottom of the slot in the bracket 95, thus. releasing said hook and permitting the lever 79 to return to normal position.- The arts are so proportioned that it requires at east 7 9 to make at least a little over three-quarters of a rota ion before theregister wheels come to, rest-"in their zero positions. In order to insure that none of the setting levers 16 shall be actuated either during thetime in which the bar 73 is held in its right-hand position or during the next rotation of the shaft 9 thereafter, an electric switch is provided including a twoarmed spring 1103 (Fig. 3)

that normally connects two contact pieces in a conductor which is common to all of the circuits that control thedigit selecting and 106 that is threaded into the upper side of a bracket 107 that projects inward from the frame plate 5. On the oppo'site end of the lever 105 from the sprin 103 there is mounted "adog 108, the end of yond the end of the lever 105 and is formed with one abrupt and one'inclined face. The pointed end thus formed is radiipted :to en'- gagethe threads'ofa worm 109 on theiendof the-shaft 9. .The dog 108yis slidablymiounted on the lever 105 by means of two'screws 110 which. extend.- through le-longate'd slots in said -dog and arethreaded into said lever. A spring?1115is connected "atone end toione of thescrws 110-andrat'the other end to the upturned ndofithe dog .108'a'nd said spring presses said do -toward :the end of the leverwith its pointed end in engagement with the worm 109. l The lever 105stands in the path -of the freefcnd of. the lever arm 83 so that when said leverarm ismoved toward the right bythe depression of the zero key the" lever 105 has its forward end moved toward the right, the inclined face of the dog'108. snapping over the threads of the worm 109.

Thelever 105 will obviousl be held in this positionluntil the book 94- 1s --releas ed, 'after which said lever ispressed by a spring against vthetthrea'ds of the worm 109 and said threads 'are so designed that it will require nearly a -'com plete rotation ,of the shaft 9 to -permit' 'theilever 105'to resume its normal position.

A'series of arc-shaped plates 112 are mounted adjacent the several re ister wheels 9 in such position that one o said plates stands a littleto'the right of each of said register wheels covering that part of each of said wheels that contain the nine pins '14 below and in front offthatpin 'l f'whichis in engagement with the stop 15. One of which projects be 1 the functions of these plates 112 is to prevent overthrow of the pins 14 when they are struck by the setting levers 16. Said plates are also so mounted that .the entire series thereof may be moved toward the left into engagement with their respective wheels 8, thus restoring to inoperative position any pin 14 that may have been set to operative position. The plates 112 are seated in vertical slots in three reciprocatory bars 113 that are slidably mounted at their ends in the frameplates 6 and 7 or in brackets mounted on said plates. In order to cause all of the bars 113 to move together when they are operated, one or more of the plates 112 have rigidly secured thereto a block 114 having two holes therein through which pass two slide rods 115 which are slidably mounted at their ends in the frame plates 6 and 7. The block or blocks '114 are secured to the rods 115'by' set screws 116 threaded through said blocks and engaging said rods. It will be seen that the plates -112, hars"113 and rods 115, thus form a frame that is adapted to be reciprocated lengthwise so as to movethe plates 112 toward and from their respective register wheels. In order to provide a remedy in case anypin 14 should by any means have 'become wronglyset, means are provided whereby the-zero setting mechanism operates this pin resetting frame. Tothis' end "tliemiddle one of the bars 113' is prolonged through the frame plate 7 into'the' right hand compartment of the'adding machine:

A lever- 117 is pivoted on a shouldered-and headed screw 118 that is threaded'sinto a" bracket-119 projecting from the frame plate 7 and one end of this lever stands opposite the projecting end of said bar 113. The

other arm of the lever 117 is in position to be engagedby a lug 120, projecting "downward from the sliding bar 71. The construction is such that whe thezero key '70 is operated the lug 120 will operate the lever 117 and operate the pin resetting frame.

Said frame is returned .to'normal position by a flatspring 121 that issecured to the frame plate 7 and atits free end presses against a pin 122 projecting from the mid- 'dle slidin bar 113.

The ad ing machine is adapted to be electrically connected with any ordinary typewriting machine, and it is here shown con nectedwith a Remington No. 0 typewriter. When this machine is used for writing numbers in columns it is ordinarily equipped" 'with a denominational tabulator and said machine is shown so equipped in the present instance. Said tabu'lator comprises a tabulator stop bar 123 that is mounted on a bracket 124 that'projects toward the rear of the machine from the carriage 125. The

and rear faces with vertical slots 21 letter 'tabulator stop bar 123 is formed on its front space distance apart and into any one of said slots a column stop 126 is adapted to be set. Said column stop is controlled in a well known manner by a series of denomination stops 127 consisting of the forwardly projecting upper ends of a series of levers 128 (Fig. 7 which are controlled by denomination keys at the front of the machine. The tabulator is so constructed that when one of said keys corresponding to a certain denomination is operated, one of the stops 127 is moved toward the front of the machine into the path of the stop 126 and at the same time the carriage is released from its step-by-step feed mechanism and is drawn toward the left by its driving spring until arrested by the stop. The denomination stops 127 are mounted in a frame 128 which is connected with a frame piece 129 which has the form of a yoke frame, the forwardly extending arms of which are mounted on a rod 130 which constitute one of the rails which guidethe carriage 125. The contact shoe 38 is mounted on a'bracket 131, the front face of which is slotted, as shown in Fig. 11, at 132 to embrace the tabulator bar 123. The bracket 131 is mounted on said tabulator bar with its end in engagement with the column stop 126 and it is secured in position by tightening aset screw 133. The contact block 38 is secured to the bracket by insulating material 135.

The wires 37 which form parts of the circuits of the denomination se ecting magnets terminate in the rearwardly projecting ends of contact pieces 136 that are mounted in a block 137 of insulating material mounted on the. frame piece 129. The forward ends of the contact ieces 136 lie flush with the front face of saitf block 137. Said contact pieces 136 are arranged in two horizontal rows in staggered arrangement and between said rows lies a common conductor bar 138. The circuit is completed by connecting said common conductor bar 138 with one after another of the contact pieces 136 through the slice 38 which has three spring pressed contact pins 139, one for the upper and one for the lower row of contact pieces 136 and one for the contact bar 138.

It is pointed out in the patent above referred to that the adding mechanism thus far described is capable of two modes of operation. According to one of said modes of operation the shaft 9 may be normally at rest and a number may be written on the typewriting machine and the stop pins 14 appropriate to the digits of said number, may be set up in the appropriate wheels 8, after which the shaft 9 may be caused to turn a suitable distance, for example, through a complete rotation, and the number set up would thus be added. A new number may then be written on the typewriting machine and set up on the adding mechanism, and

. motor.

the shaft 9 be given another iotation. According to the second mode of operation the shaft 9 may be continuously driven by any suitable motor. In this case when any numeral key is struck when the carriage is in position to. write numbers in the adding column, the appropriate stop pin in the appropriate register wheel will be set and said wheel released for rotation and it will immediately begin to turn with the shaft 9 until arrested by the newly set pin. It is this latter mode of operation that is more fully set forth in said patent, but it is the first of said modes of operation that is contemplated in the present instance. As set forth in said patent, the shaft 9. had'mounted thereon a bevel gear 140 that meshed with a beveled gear 141 mounted on a vertical shaft 142 which extended through and below the horizontal frame plate 4. into the lower part of the machine where said shaft was suitably geared to an electric motor that was permitted to run during the entire time that the adding machine was in use. It

will be obvious that the machine set forth in said patent can be operated according to the first mode of operation above set forth by starting and stopping the electric motor. In the present instance I use the gears 140 and 141 and the shaft 142 but said shaft does not extend through the frame plate 4 and itis connected with the motor bv a' clutch device so that said shaft may be started and stopped without starting and stopping the The shaft 142 is journaled in bearings in a bracket 143 that rises from the frame plate 4 to which it is secured by screws 144. Endwise motion of said shaft is prevented by two collars 145 mounted on said shaft respectively beneath the upper and above the lower of the two bearings and secured in positiom on said shaft by set screws 146. A vertical shaft 147 is coaxial with the shaft 142 and has its upper end just below the lower end of the latter shaft. The shaft 147 is journaled beneath the frame plate 4 in a bracket 148 that is secured to the underside of the frame plate 4 by screws 149. Said shaft has mounted on its lower end a worm wheel 150 that is engaged by a worm on the shaft of the electric motor; or said shaft 147 may be geared to said motor in any suitable manner. It will, of course, be understood that any suitable means may be provided for continuously rotating the shaft 147. Endwise motion of said shaft is prevented in one direction by the engagement of the worm wheel 150 with one of the bearings of said shaft and in the other direction by a collar 151 secured to said shaft by a set screw 152. The shafts 147 and 142 are adapted to be coupled together by a clutch device, the lower member of which consists of a crown toothed ratchet wheel 153 mounted on the upper end of the shaft is mounted on the lower end of the shaft 142 and fixed thereon by a set screw 156. The bearing piece 155 has arms 157 in which are journaled the ends ofa horizontal rock shaft 158. On one of the projecting ends of said rock shaft there is rigidly mounted an arm 159 in the free end of which is formed a notch 160 (Fig. 2) into which a pin 161 projects from a pawl or dog 162 that is pivoted by the side of the arm 159 on a shouldered and headed screw 163 which is threaded into the end of the shaft 158. The notch 160 is wider than the pin 161 and said pin is normally held against the upper wall of said notch by a light fiat spring 164 that is fastened to the upper edge of the pawl 162 and engages the upper edge of the arm 159. A spring 165 is coiled about the shaft 158 between the two arms 157 and is connected at one end to said shaft and at the other end to one of said arms. Said spring tends to rotate the shaft 158 in a direction to move the pawl 162 into engagement with the teeth of the ratchet wheel 153 and thus to couple the shaft 142 with the shaft 147.

In order to normally hold the pawl 162 up out of engagement with the ratchet wheel 153 an upright arm 166 is mounted on the end of the shaft 158 opposite said pawl 162 and is rigidly secured to said shaft by a screw 167 threaded into the end of the shaft. The upper end of the arm 166 is normally engaged by a lug 168 depending from the free end of an arm 169 that is pivotally mounted on the frame plate 5 by means which will presently be described. For some of the purposes of my invention any suitable means may be provided for moving the lug 168 out of the path of the am 166. If said lug be momentarily moved out of engagement with said arm the spring 165 will immediately turn the shaft 158 and move the pawl 162 into engagement with the ratchet wheel 153. The arm 166 being thus moved a little toward the right-hand side.

of the machine, the lug 168 can no longer get in front of said arm. In order to permit the arm 1-69 to be restored to normal position as promptly as possible, the rear face of the upper end of the'arm 166 is beveled, as shown in Fig. 1, at 170. \Vh'en the pawl 162 engages the ratchet wheel 153 and the two shafts are thus coupled together they are free to make at least one entire rotation together. If, meanwhile. the arm 169 has been restored to normal position the lug 168 will be in the path of the arm 166 and when said arm engages said lug it will be arrested thereby and the shaft 158 will be forced to rotate toward the left-hand side of the machine, thus raising the arm 159 on said shaft. The pawl 162 will be held by friction in engagement with one of the teeth of the ratchet wheel 152 until the lower wall of the notch 160 strikes the pin 161 and forces said pawl away from said tooth. As soon as the pawl is free from the tooth the spring164 will raise said pawl until the pin 161 engages the upper wall of the notch 160. By this means the pawl 162 will always be elevated a sufficient distance above the tops of the teeth of the ratchet wheel to insure that said teeth will not again strike said pawl until the arm 166 has been again released.

It will be perceived that when the arm 166 is in engagement with the lug 168, the spring 165 tends to rotate the shaft 142 backward. In order to hold said shaft against such backward turning, I have provided a detent device, shown in Figs. 2 and 6. The bearings of the shaft 142 in the bracket 143 are two-piece bearings, each comprising a member 171 which is secured to the bracket 143 by screws 172. One of said bearing members is formed on its inner face with a segmental slot 173 that is eccentric to the opening in which the shaft 142 is journaled and in said eccentric slot is mounted a detent roller or 'ball 174 that is pressed against the shaft 142 by a compression spring 175. The construction is such that the roller 174 permits the shaft 142 to turn free in one direction but not in the other.

I prefer to operate the arm 169 to release the clutch mechanism above desdribed by means of a two-pole electromagnet 176 which is mounted on the inner face of the frame plate 5 by screws passing from said frame plate and threaded into holes 177 (Fig. 3)formed in the iron member 17 8 that connects the two coils of the electromagnet. Said coils are mounted one above the other, as shown, and they cooperate with an arma ture 179 that is pivoted on pins 180 that project into said armature from two brackets 181, that are secured to the inner face of the frame plate 5 by screws 182. The arm 169 projects toward the left from the armature 179. Said armature is normally drawn away from the electromagnet 176 by a spring 183 (Fig. 1) which is connected at one end to said armature and at the other end to a pin 184 projecting from the frame plate 5.

The electric circuit of the electromagnet 172 may be controlled by any suitable circuit controller, such, for instance, as a special key; but I prefer to control said circuit automatically by the return motion of the carriage. To this end I have mounted on the top of the insulator block 137 a conductor plate 185 which is connected by a binding screw 186 and wire 187 with the electromagnet 176. A lever 188 is pivoted on the conductor 'plate 185 by means of a shouldered and headed screw 189. The lever 188 is normally pressed toward the back of the ma- I chine by a-spri'ng 100 secured to said lever and engaging a pin 190 projecting from the block 137, and the backward motion of said lever is limited by another pin 191 also projecting from said insulating block. At its free end the lever 188 is provided with a contactpiece 192 adapted to engage a cooperating contact piece on a conductor 193 which is secured to the top of the insulator block 137 by screws 19%. One of said screws is connected by a wire 195 with a certain common conductor 196 that forms part of the electrical connections of the adding machine.

Said conductor 196 is connected to a source of electricity lQT'byconductors including a main switch 198. The bther side of saidsource of electricity is connected with another conductor bar 199 which 'in turn is connected with ,the electromagnet 176. A The lever 188 is formed with a rounded forwardly pro jecting arm 200 that stands in the path of a friction device comprising a shoe of insulating material 201 mounted on a spring 202 that is bowed toward the hack of the machine from the'hracket '131 on which the con tact block 138 is' mounted. The sprin'g202 is secured to said bracket at one end by a screw 203 and at the other end said spring is slot-ted to embrace a headed pin 204. The construction is such that as the shoe 201 passes the arm 200 it is pressed by the spring 202 against said arm. 'VVhen the carriage is moving toward the left the friction of said shoe 201- against the arm 200 tends to press the lever 188 toward the re. of the machine; but. when the carriage is drawn toward the right to begin a new line. these friction de vices move the lever 188 toward the front of the machine and bring the contacts 192 into engagement, thus momentarily closing the circuit through the magnet 176 with the re sult that thestop lug 1'68 on the arm 169 is withdrawn fr'om't'he'path of the arm 166 and the-shaft 142 and with it the shaft 9 are permitted to make asingle rotation, after.

which they a'reagain arrested the lug 168. It will be observed that should the movement of the typewriter carriage from left to right he stopped while the friction devices 200 and 201 are in contact, the lostmotion in the typewriter -carriage parts will be taken up by the carriage tension spring and. the carriage will be'movcd slightly from right to left. and the contacts 196 will be thus thrown out of engagement.

It will be perceived that after the severalpins 14 have been set inthe register wheels, said re ister wheels remain at rest until the typewriter carriage is withdrawn toward the right. If prior to this time the operator observes that he has struck the wrong numeral keys and thus written the wrong number on the typewriting machineand set up the wrong number on the adding machine, he hasan opportunity to correct the number thus erroneously set up. This correction v} and that also extends through a suitable hole in the casing 209 (Fig.1). .The outwardmotion of the key stem 206 is limited by a collar 210. secured on said stem by a setscrew and engaging the inner end "of the bearing 207. The inner endof the key stem 206 cugages one end of a lever'211, the hub 212 of which is rigidly mounted by'meansof a set screw on'a vertical rock shaft 213.v which is journaled at its ends in brackets 214 jecting from the frame plate It will be understood ifrom the'descrip. tion ofpthe' adding mechanism.-givenabove that. in each of those register wheels 8 in which a digit'has been set up, that stop pin 14 .which 'wasin engagement with the stop pro- - 15 has been reset to inoperative position. It

is necessary that the correcting key set all of these pins back to operativeposition.

This is done by operating thebell crank levers 63, moving the Tshaped end' 67 of each of said bell crankstoward its register wheel, thus pushing the inzli .back to operative position. In or er tqoperate-all of these levers by the Correctingkey', a bar 215, shown in perspective in Fig. 9, is slid ably mounted in the frame plates 6 and 7, just abo\'e the frame bar 32; Said slide bar is formed with a series of forwardly projecting arms 216, the forward ends of which are bent downward-,as shown at 217 Figs. 4 and 9." Each of the downwardly exitendingarms 217 lies just; to the left of one of the le\*er.arms-67 insu'li position that if the slide bar 215 be movedjtoward the right all of said levers will be operated and all of the stop pinsstanding opposite said levers will be set to: operative position. In order to so move said slide .barits right-hand end is bentup to form a lug 218 that lies in the path of the lever 21-1. The slide bar. 215 is. returnedto normal position by a spring 219 that isusecurcd to the frame'plate 7 by a screw 220 and the free end of .which 'engages a pin 221 dependingfromfthe. slide bar 215. The motion of said slide bar under the impulse of said spring is limited by a pin 222 projecting upward from said slide bar in position to engage the frame plate 7. The lever 211 is restored to normal position by a-spring 223 that is connected at one end to said lever and at the other end to the frame plate 5.

In order to reset tofinopeiative position all of the pins 14 which have been set to operative position by the- Setting levers 16, the pin resetting frame hereinbefore. described is operated. To this end the lever 117 which operates said-frame is ex'tendt'd beneath the slide bar 215 and into the path of a'pin 224 projecting downward from said slide bar. The construction is such that when the correcting key 205 is pushed inward all those pins 14; which are in position to engage the stops 15 will be set to operative position and all those pins 14 which have been set to operative position in accordance with the digits of a number will be reset to inoperative position by the arc-shaped plates 112.

Means are provided whereby when the zero key 70 is depressed the clutch mechanism between the shafts 142 and 147 will be brought into'operation. As has been explained above this. clutch mechanism is adapted to be thrown out of operation automatically at the end of a single rotation of theshaft 142, but it requires more than a single rotation of said shaft to complete the zero setting operation. I have, therefore, provided means whereby when the zero key is depressed the arm 169 is held in its inoperative position until after. the first rotation of the shaft 142 is completed-and isrestored to operative position before the completion of the second rotation of said shaft so that when said shaft completes its second rotation it will be arrested by said arm. To this end a vertical rock shaft 225 is journaled in-two' brackets 226 that project from the frameplate 5 to which they are secured by screws 227; At-itsupper end the rock shaft 225 carries an arm 228 having a pm 229 projectingtherefrom into the path of the lever 105. -At its lower end the'rock shaft 225 has projecting therefrom an arm n 230 having a pin 231 projecting from its free end into the path of an arm 232 which is secured to the upper end of thearmature 179 by screws 233. As shown-in the present instance it isto a branch of this arm .232 that the returning spring 183 is connected.

' The construction is such that when the arm 105 is movedtoward the right by the depression of the zero setting key 70, said arm, engaging the pin' 229, rocks the rock shaft 225 and the pin 231,'engaging the arm 232,

suitable means.

This lever is, therefore, held awayfrom its normal position for more than one complete rotation of the shaft 9 and less than two complete rotations thereof. The arm 169 will, therefore, be in inoperative position when the shaft 142 completes its first rotation and will be restored to operative position before said shaft completes its second rotation, so that said shaft will be arrested at the end of its second rotation.

The electrical connections between the carriage and keys of the typewriter and the denomination and digit selecting magnets, are shown more especially in Figs. 13-16. As has already been explained, it is only essential that when a numeral key is depressed at a time when the carriage is in the adding column, an electric circuit shall be completed through the proper one of the digit selecting magnets 36 and the proper one of the denomination selecting magnets 46. This circuit may be completed in this way by any As shown in the present instance, each of the numeral keys 230' is mounted on the usual key lever 231 which is pivoted at its rear end on a wing or web I 232 depending from the back shelf 233 of the typewriting machine, the keys being held in normal position by springs 234. The keycontrolled electric contacts shown in the pres ent instance are mounted within the box .50

of insulating material and'saidbox-is proa vided with a removable lid 235 whichcovers the whole of said box except inione corner in which is mounted a stationary piece of insulating material 236, one corner of which is supported by a post 237. The wires49 lot rated from each other by strips of insulating. material 240, the whole constituting a plug: that is adapted to be seated infi an opening' 241 (Fig. 12) in the corner piece 236. The plug is retained in'posit-ion by a headed-pin 242 that passes through the piece-236 and through an opening plug. The construction is such that the P may be readily removed in case to disconnect the typewriting machinefrom the cable 3. 'A series of spring conductors.

244 are secured to the base of screws 9A5 and said springs bear ainst the conductor pieces, 238 when the pilgis inposition. The springs 244 are connected b wires 246 with resilient flat conductors 24 box so by which are sechredat their rear ends to the.

base of the box 50 by screws 248. Each of the springs 247 has an openin through which there passes loose y a post 250 on which is threaded a thumb nut 251 by adjusting which the normal osition of the spring may be regulated. e free-end of each of the springs 247 carries a contact 243 (Fig. 15 in the.

therein 5 lit) box 50. Each of the arms 254 is adapted to v be engaged by a spring-pressed hook 261 that extends upward through a suitable opening'inthe bottom of the box 50 and which, at its lower end, is pivotally connected with one of the numeral key levers 231. The construction is such that when any of said numeral k e'y lev'e'rs is depremed the corresponding arm 254 will-be depressed and will bring the contact'points 252 and into contact. All of the arms 254 are mounted on the'bar-25'5 andare in electricalcontact with said bar-. SaidIbariS connected by a wire .262 with ionegofthe springs 244 through which said wireisconnected with a wire 263 (Fig. 18) that r us up through the cable 3 and is connected a its upper en'd with the rmiversalcontzict piece 138. The construction is such that, the carriage being in the adding column, when a numeral key is depressed a circuit is completed through the rod 255, arm 254 wire -19 to the digit selecting magnet 46 corresponding to the key de-' pressed, thence to the common conductor 196, to the battery or other source of electrical energy,;,then'c e to the common conductor 199 throughth'at one of the denomination selecting magnets 36 whichcorresponds to the denominational. position of the carriage and through a wire 37 and'contacts 139 in the shoe-38 to the conductor bar or strip 138, and thence through the win: 263 back to the bar255f E Y It willbe obvious that various changes may be made in the details of'construction and arrangement without departing from my invention. r

It'will also be obvious, that'some of the features of myinvention are capable of use in connection with adding mechanism ditl'ering widely from that hereshown.

What-.Lclaim as new and desireto ecure by Letters Patent, is Y Y 1. In an adding device, the combination of a typewriter having me'ansincluding numeral keys for writing any words and,

numbers: a series of ILQgIStEIIHg'GlEmQIItS; means controlled by said numeral keys'for setting-up digits in one denomination after another; a power (lei/1C8: and means controlled automatically by a moving part of said typewriter for bringing said power device into operation after a number has been set up, to actuate said registering elements.

of registering elements for adding numbers of numeral keys; a-step-by ste'p-device for bringing one denomination of said rg1ster-- ing elements after another under the control controlled by a movement of said step-bystep device for bringing saidpower device into operation to actuate said registering ele ment-s. i

3. In an adding device, the combination of a series of registering elements; settingup devices for controlling said registering elements; a group of numeral keys; a-cai: riage adapted to connectrsaid keys with one denomination after another of said setting up devices; a power device; and means power device into operation after a'number has been set up to actuate said registering elements.

of a series of registering elements; a. groupof numeral keys; a carriage;.- means conup the digits of a number one after another and means brought into operationby the said registering elements to add the number setup. v Q 5. In an adding'devie,'. the combination of a series of registering elements; a group of numeral keys; a carriage; means controlled by said. keys and carriage for setting up the digits of amumber one after an pendent of that applied to the carriage-and of said carriage -foractuating said registering elements to add the. numberset 11pm means controlled -by said. keyslfor setting tering elements; and means brought into connecting said registering elements with said sha "cally o ratedi ineans for gbringingjsaid power riven means intooperation.

T 8. In anadding'device; the combination of series of register wheels; means "for setting up a number to be added on said register Wheels; a continuously rotative shaft; means for operating said register wheels; and a clutch device adapted to couple said 2. In an adding device-the combinationof av plurality of denominations; agrou'pbroughtinto operation by the returnmotion;

operation after a number has been set up for" of said keys; :1 powertdevice; and meanscontrolled by said carriage for bringing said I 4. In an adding device the combination trolled by said keys and carriage for setting return motion of said carriage for actuating other; and means operated by a. power inde- 6. In an adding device, the combination of. 7 a continuously rotative shaft; :1, series of registering elements; a group of keys comnion to all of said registering elements? up'digits on one after anotherv of said regis- 7. .In an adding devicefthe. combination ofiaseries of -registergwheelsy arseriesfof keys key controlled electricali=- devices. for se't ting-up-fa number adde'dlon said register wheels; power driven 'vmeans for" operatirg said -register wheels; and aelectri resetting the first mentioned the path of said arm; a pawlmounted on said shaft and having lost motion connection with said rocking member and adapted to engage said continuously rotative member; and means for moving said stop out of the path of said arm.

10. In an adding machine, the combination of a series of register wheels; a shaft for operating -said register wheels; means for imparting a single rotation to said shaft to add a number; and zero setting mechanism including means for affording-to said shaft-a plurality of rotations.

It. In anaddi'n machine, the combination of aseries o registering elements;'a series of settable' stops for controlling the m'otion'of said'r istering elements; means for setting. one o said stops to operative position and resetting to'inoperative position that stop that was previously in operative position, and a correcting device for operative positionand jagalin' setting the last mentioned stop to operativeposition.

12. In an adding-machine,the combinition of a series of registering elements; 'a series ofsettable digitidetermining members for eachof said 'steringelements;

means for setting up a digit to beadded on any registering element, said means including means for setting one of said stops. to-

operative position and resetting "to inopera} tive position that stop which was formerly in operative position; a-cor'recting keyand connections adapted to reset to inoperative in the several wheels appropriate to the digits of a number to be added, and for resetting in said wheels those stops that were in operative position; a correcting device including means for resetting to inoperative position those stops that were set in setting up a number; and means for restoring to operative position those stops that were reset to inoperative position in setting up said number.

14. In an adding machine, the combination of a series of register wheels, each carrying a series of settable stops, one stop being normally in operative posit-ion; means for setting to operative position stops. in

the several wheels appropriate to the digits reset to inoperative position in setting up said number; and means for operating said register wheels after a number has been set up.

15. In an adding machine the combination of a driving shaft; a series of register wheels, each independently frictionally connected .with said driving shaft; a continu- :ously rotative member; means for setting up'a number to be added on said register wheels;ai1d means for coupling said drivmg shaftwith and automatically unconpling-it from said continuously rotative.-.

member.

16. In a combined typewriting and add- .ing device, the combination of a series of keys mcludingnumeral keys; printing mstrumentalities controlled by said keys; :1 series of registering elements for adding numbers written 'on said typewriting mechanism; means controlled by said numeral keys for controlling the motion of said'reg- =istering elements; a power. device for drivmg said registering elements; and means controlled by amovement of the carriage ofthe typewriting machine for bringingsaid power device into operation. T '17. In acombined typewriting and add-. .ing device; the combination of a seriesof keys including numeral keys, printing in-' strumentalities controlled by said keys; a

series ofregistering elements for adding numbers written on said typewriting mechanism; means controlled by said numeral keys for controlling the motion ofsaid'registering elements; a power device for driving said registering elements; and elect'ri cally operated means controlled by a move-- ment ofthe carriage of thetypewriting mae chine for bringing said power device into operation.

18: In an adding machine, the combine tion of a series of register wheels; a driving shaft for said register wheel's; a-power derice for operating said driving shaft in one direction; means foriconnecting said drivmg shaft with and disconnect-mg it from means for rotating them, settable means for registering elements to add numbers; a

said power device; and a detent for preventing backward rotation of said driving shaft.

19. In an adding machine, the combination of a series of registering elements; means for controlling the motion of said power device; means for connecting said power device with said registering elements to' operate the latter to add numbers; and a zero setting mechanism including a key and means controlled by said key for connecting said power device with said registering elements and for arresting said registering elements in their zero positions.

20. In a typewriting and adding device, the combination of a series of keys including. numeral keys; printing instrumentalities controlled by said keys; a series of registering elements; electrical devices controlled by said numeral keys for setting up a number to be added on said registering elements; a power device-"for operating said registering elements'after a number has been 1 set up; electrically operated means controlled by the typewriting mechanism for bringing said power device into operation; and a zero setting mechanism for the adding mechanism, said zero setting mechanism-including a zero key and-means controlled by said key for bringing said power device into operation and for controlling the operation of said power device to set said registering elements to zero. I

21. The combination of-anadding wheel, means for rotating said wheel, settable stops carried by-said wheel, meansfor moving said stops to operative position, and independent means for replacing said stops to their original positions before the wheel is rotated. l

'22. The combination of a series of adding wheels, settable stops carried by said wheels, 1 means for moving said stops to operative position, and acorrection key and connections for replacing said stops to their original positions.

"23. The combination of aseries of adding members, means for operatin said adding members, movable stops carrie by said'adding {members for limitin the movement thereof, and means for rep acing said stops to their original positions after being movedand before said adding members are operated. f

24. The combination of a series of independently frictionally driven adding wheels,

limiting said rotation, means for operating said settable means. and means for replacing said settable means to their original positions before said wheels are rotated.

25. The combination of a typewriter. a l series of adding wheels controlled by the i keys and carriage of said typewriter, means for limiting the movement of said adding wheels controlled by said keys and carriage, means for rotating said wheels, and means for replacing said limiting means to their original positions before the opera tion of said rotating means. I

26. The combination of a series of adding wheels, independent frictional means for ro tating each adding wheel, a series of settabltstops for holding each of said adding wheels against rotation means for moving said stops out of holding position, and means for replacing said stops into their holding position before the operation of said rotating means.

27. The combination of an adding wheel, frictional means. for rotating said wheel, a movable stop for holding said wheel against rotation by said frictional means, means for moving said stop out of said holding position, and means for replacing said stop back again into said holding position before the operation of said-rotatmg means.

28. In a typewriting and adding machine, the combination of typewriting'mechanism and adding-mechanism including means for writing thedigits of a number by said typewrit ing mechanism and setting up said numher in said adding mechanism, a power device for operatin said adding mechanism, and means cont-r0 led by a part of the typewriting mechanism for bringing said power device into operation after the number has operating said switch once for each number written.

,. 30. Ima combined typewriti-ng and adding machine the combination of typewriting mechanism and adding mechanism includmeans for setting up numbers to be added, means for operating said adding mechanism, electric circuits for controlling said setting up means, said electric circuits including contacts controlled" by the typewriting mechanism, an electric circuit for controlling tric circuit including a contact controlled said operating means. said elecby said typewriting mechanism.

'3L The combination with typewriting mechanism of adding mechanism including means for setting up the digits of a number tobe added, means for operating the adding 

